Process of producing a fireproof and elastic material.



106. comPosmous,

UNITED STATES PATENT OFFICE.

NINO MAGELSSEN', 0F CHRISTIANIA, NORWAY.

PROCESS OF PRODUCING A FIREPROOF AND ELASTIC MATERIAL.

No Drawing.

To all whom it may concern:

Be it known that I, Nmo MAGELSSEN, a subject of the King of Norway, residing at Christiania, Norway, have invented certain new and useful Improvements in the Process of Producing a Fireproof and Elastic Material; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to compositions of materials and has for its object a process of producing a fireproof material, which is elastic and able to resist the action of water and acids, and which may be employed for providing various objects made for instance of wood, metals, burnt clay, cement, plaster of Paris, with a protective covering.

The main components from which the matterial is produced are carbonate of lime,

waten-glass and asbestos.

The process 0 proc ucmg the material 1s ner. Carbonate of lime in the form of chalk preferably carried out in the following mantoget ier W1 1 a $111 a c an un o as es 0 ,is mixed with water-glass to form a uni- 5 form mixtummall amountaof an acicLor substances acting as an acid upon the water glass are added and incorporated in the mass The amounts of the various components are so proportioned as to obtain a mass of pasty consistence. It is of importance, that the water-glass (double wfater-glass) e1 pd on ains n excesc1 o allnl or some a kali should be rp l x e It has been fdunchdiiinost cases, can an excess of alkali of about 13 per cent. (preferably 8 per cent. KQH and 5 per cent. Na-OH) will be suflicient. The acid (or acid substance) introduced into the composition acts to initiate the neagtigg which is completed later on, when the composition is subjected to the action of the carbon dioxid ofv the atmosphere. As an acid substance may be advantageously employed, I use a famous sulfate containing acid in excess, an 0 1s su s ance per cent. may bFemployed.

When this composition is to be used for Specification of Letters Iatent.

Patented Sept. 30, 1913.

Application filed November 23, 1911. Serial No. 661,934.

providing objects of various materials with a protective covering the pastyn nass is spread upon the object in a layer of suitable thickness, whereupon the object is placed so as to be subject to the action of the air. In certain cases it will be suitable time. The composition' 'w'ill tIieiiafter a ering, which is at the same time elastic, and which will adhere to the underlayer with great strength. The covering obtained in tion of warm as well as of cold water and of cold or boiling dilute and concentrated acids.

The relative amounts of the various components of the composition is to be varied in accordance to the special use in each case and to the method employed in spreading the composition upon the object to be coated, as this may be effected in various manners for instance by means of a brush or the like.

As the covering is in itself hard and elastic the objects which are provided with this covering may be very thin and it is also possible to produce objects of various shapes from a'composi tion as that above described ,without the use of other materials.

The covering may advantageously be employed upon vessels (for instance cooking vessels) of metals or burnt clay instead of the enamel oriad glassi gga any employed for tl'ii"p"uipo'ei I claim:

The process of producing a fireproof and elastic material capable of resisting the action of water, which consists in mixing carbonate of li m e aabestpsy ith t gla s if l fiiiiie o s esspf oratmg' 1n the mass a substance mg as an acid updnthe silicgite. A

In testimony tl fat I'claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

NINO MAGELSSEN.

Witnesses MARTIN E. GU'I'IORMESEN,

HENRY BONLEWICH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0."

Examine to maintain the coating.. heated fQILH QQQ.

this manner is fireproof and resists the acshort time be transformed into a hard cov- 

